Gas-tight steel tank



H. R. LELAND GAS TIGHT STEEL TANK Filed Nov. ll, 1920 2 Sheets-Sheet l Nw. 24, w25. 1,563,19

- H. R. L ELAND GAS TIGHT STEEL TANK Filed Nov. 11, 1920 2 sheets-sheet iii iti

Fatented NewO 23d, lFti,

Y-'IARRISCJN LR. LELAND, GF PARKERSBURG, WEST VIRGNI, ASSIGNOR TO THE JEPLRKERSBURG: F/lG @a REEL CGMPANY, 0F PARKERSBURG, TEST VBGINA,

RFE'ATN QF @VEST Vf-llfzt.

GSJZIGHT Application tiled November tank, of an automatic positive and negative acting differential pressure regulator', the regulator being arranged to maintain a predetermined pressure in the tank to retard evaporation, hut to permit escape of gases when the pressure exceeds a certain limit,

and being 'furtherl arranged to permit en-` trance of' air when oil is' withdrawn from the tank.

The invention further comprises a rtank which is absohnteljfv gas-tight, and in which leakage of oil, or evaporation, is reduced to a minimum. Since the introduction otthe use of metal `tanks for storing oil, the losses have been reduced. llVhen oil is stored in wooden tanks, there is not only a large loss due to evaporation, but there is a further loss due to seepage through the walls of the tank. The use et metal tanks has eliminated loss due to the latter cause, but heretofore, the tanks have been so constructed that losses due to evaporation have been very great. 'While the bottom and side walls of the oil tanks have been provided with packing to prevent leakage, the'top or deck has been given little consideration with the result that large openings have vheen left in the deck ot the tank, permitting free flow oit air into the tank and free flow oi evaporated oil and gas from the tank.

The losses'jdue to evaporation have, in the past, been enormous. Furthermore, the lighter and more Volatile constituents of hv drocarhon oils which are in greatest demand, torni the greatest' portion of the oil lost `through evaporation.

ln the present invention, l have provided an oil tank wherein` the parts are arranged to `practically eliminate evaporation.' The deck of the tank is made absolutely gas-tight and is provided with packing where it joins the side walls of the tank to prevent entrance of air. I have further provided a dierential pressure regulator which prevents the l STEEL TANK.

11, 192D. Serial No. 423,291.

.lSti

The tank is capable of use as a storage "tank or as a iiow tank, and may he employed as a combined tlow and storage tank.

ln the accompanying drawings, I have shown one embodiment of the invention. ln this showing:

Figure l is a vertical sectional view of the tank,

Figure 2 is a horizontal sectional view on line 2-2 or Figure 1,

Figure 3 is a top plan view,

Figure t is a detail View of the clean-out plate,

Figure 5 is a sectional view on line 5-5 or' Figure t,

Figure 6 is a detail sectional view showing the manhole dome.

Figure 'Y is a detail view of the filling,- pipe,

Figure 8 is a sectional view on line 8-8 ot Figure 3,

Figure 9 is a detail sectional View et the bottom of the tank,

Figure l0 is a detail sectional view showing the method in which the bottom and deck are joined to the side walls,

Figure 1l is a sectional view on line ll-ll of F igure l, taken in the direction of the arrows, and,

Figure 12 is a detail sectional view on line :l2-l2 of Figure 3.

Referring to the drawings, the reference numeral l designates the bottom of the tank, which is provided with side walls 2, and a deck 3.' The bottom and the deck of the tank are each constructed of a plurality of separate plates cut to a redetermined size and provided with space openings for the reception of bolts or other fastening means. (See Figures 2 and 3.) The separate plates forming the bottone and deck oi' the tank are joined to each other by a lap seam joint and are provided with suitable packing to prevent leakage. Referring to Figure 9 of the drawings, the plates 4 which form the bot-- tom and deck of the tank are arranged with their adjacent ends overlapping and with Y.

tha @per a A Siri? eine packing l@ o gas a twas of im Si pmvldef Y @mug-h 2m spanning die mm: "l, connecten *no pkg; 1s mprovided w'ph *h Bein@ l ling pipe p11# ed to ffsceve t1 1G c f :om ih@ tup o is so mnyfucet a5 i@ .pave' the tank i@ iik@ he. Gil in a parthreugh th'ze;h0e md dai spiny, but cmlfe i mp. y in a om- The @hte :wound i parat seam i@ f e Smae of ha @il Where hoi@ opening; @Tienda f nfmmy toward fue ii; Hows out I "'uwgh ffm; f ngzudinu cener of ik@ opening about one inch be'fonf`iopeng 7' @il 'hus conveyed the manfhoe and in 11h@ sam piane. im@ the tank El plesemt 'the leas?, possib To this @ma inch ifitensm bite surface to the m viz'gim'atcm will be bci dem@ by ummm reduced izo .minimi/1m. Thfoug'h "zhe ongiv being mafs, gasmight :mal Opening 33, any which may mf The man-hoi@ @over ump/:zd im@ me tank with the oil may mfznlwfe dome and made I into ihm pmi 03'? the zan; not accu byg. The. tank is povec with the het; openmg' S and with a clean- (saa Fzgums #i :ma :3) hmmg 13e by msm- S of which may be can 'ale :and .he milk side and veg/'ed to 'they ai'iwsphem to sm nsem. auge threaded Sang@ 39 is arranged As shown h@ S l deck m he f -flembm islam' and S-adapid to re- :ound conuitonszeig, :zelve sanf'zird mp5 as x@ 1 9, ar- Th@ autemamunlly acting dii intesi iloeed on the manhole ooi/er eo es to permit removal, but in the eeeonigonying drawings, l h shown/it on slightly enlarged Sonie sind Y tor elsirity of presentation, have Shown it nrrenged ou the deelt. he shown, deelt ot the tnnlt is provided with on 4opening Ill, adopted to communicate with the through n pipe 4t2. The gage is v3ormfided with two chriinbers i3 and lle, sepsitende to :i Suitohle point neer the ground to permit Qontrol et the Govern The two chambers ot the gege ere provided with openings ond, plugs 52 'to permit introduction oit o, liquid into the te stated, the tenir may be employed as o itiow 'tenir or oe e storage tank, or as :i tlow end storage tenir. @n property where production is light., the tank may he used as n Combined dow and sto'inge tenir. The oon- ,e'truetion of' the variouo parte of the tenir ie such that no goees may eoeepe or nir enter except Aunder pressure through pipe 42. The erodey oil in the titoli: has :in eiiinity for the light hydrocarbons which have passed. 'from it (evaporated) under the following eireum etuneee:

When the nir in the tenir and immediately n content with. the oil is saturated with the ight hydrocarbons;

Jhon Sonie saturated is subjected to l' -leiht ipreseure, enel] es is maintain d by the 4 '""ei,'ential pressure regulator herein deserihed.

Theoe conditions ore supplied and ineintoined by tiret supplying' o, gne-tight deelt ond preesure regulator, and second indueH in o; oil into the tenir, displacing the seturote'd oir, thus creating pressure. is the tank lille, o, certain ernennt et' goseouo eir must escape 'through the pressure regulatorn During the whole period, however, n large amount ot the grises, fire lieing absorbed by the oil. 'lhie redneee the losses due to evaporation to e minimum.

The operation oi? the nuton'intienlly noting differential pressure regulator is ne jfollows:

fl-ny Suitable liquid 'is placed in the bob tom of the regulator through. the inlets The liquid "will normally aseunie 'the Some level in @oeh elnunlier designnted by the reference numeral Any gas in the tank will Create :i pressure in the Chamber ll und tend to disturb the normal level ot the liquid, ns 'designated by the dotted lines and f lfhe perte if the regulotor are so.'eonst1uetod thnt when u predetermined pressure is reached within the tank, the lever 54; in the elnunber dit will be toi-eed down below the posenge Gite will then bubble up through the liquid contained in the chamber et?, ond exhaust through pipo 48. vWhen the tank is being emptied und o partial vacuum is created by the withdrawal of the oil from the tank, atmospheric pressure in the elnunber 1li will forro the level of the liquid down below the pes- Sage find nir will bubble through the liquid and pese into the tank through pipe 4Q.

Any suitable liquid only he employed in theregulator.v l here :found that crude oil is highly f-:utioiinetory for this purpose, :is it is readily obtainable :it the point where the tnnl; to be used sind it will absorb o certain amount of the lighter constituents escaping in gaseous forni. As these light constituents nre the most desired constituente ot oil, it is highly ndvuitngeous to employ crude oil und aba. f ghe-nn.

The Various dimeneione o'l the pressure regulator und the connecting pipe lf2 must be predetermined in View the firessnre desired in the lunle. jiw'iirizililo intake und outlet preesure may he obtained hy varying the cross-Sectional oren of the Chambers und 44;. The bullies; in the elmm'oers and l-l are provided to furnish u more eonslent pressure, to minimize fluctuations, und to battle escape of globules oit rogge liuid.4

the battles were not employed, there would be e sudden rush of ges into the gage at any time that o bodyT of gos present in the tonlt, due to vurious resistono, and the action would probably he euftieiently violent to terry otll a portion oi the liquid in the regulator. Through the use ot .butlles 47,

"the pressure is held more Constant :is the flow oit ges is retarded and distributed over n longer period of time. rihe size ofthe bellies is important and 'their cross-sectional oren muet be determined and properly pro-- portioned to the area oit the chambers.

lt is to be understood that While l have shown the preferred embodiment o'tf my in rention, various changes in the shape, Size, end arrangement of ports may be resorted to Without departing' from the spirit of the invention or the Scope of the eubjoined Claims.

Hoving thus described my invention, l elnini;

l. ii pressure regulator Jfor tanks comprising u easing, o partition Wall arranged sul etnntially centrally thereof ond extending from the top of the easing to a point nenr the bottom to provide :i ptdr ot' chambers communicating with oooh other it the botloin of the easing, each oi seid chambers being' provided with openings arranged et the top thereof, one of said openings being lll] l il

Connected to am inlet pipe and the other.

@bike bptom, @ash of said chambers bing pa'ovlfecl W'h openmgs at the top ormmg an ine: and outet, baes arranged in' said cham-meis. il chambers being' adapted to receive a l d arranged to flow fram one chambr die othc', und means fol' nmducingj he liquid into the casing.

Tin izestumny whereof, l' 135x my signaiufm ELQRMSQN R. LELAND 

